All MCP servers not working in 0.48.2

Feedback
1

Hey,

I have several MCP servers that worked up until 0.48.x

Now I’m getting Client closed on all of them:

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image1302×730 54.2 KB

Here’s the mcp.json:

{
  "mcpServers": {
    "sequential-thinking": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-sequential-thinking"
      ]
    },
    "gitlab": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-gitlab"
      ]
    },
    "browser-tools": {
      "command": "npx",
      "args": [
        "@agentdeskai/[email protected]"
      ]
    },
    "firecrawl-scraping": {
      "command": "npx",
      "args": ["-y", "firecrawl-mcp"],
      "env": {
        "FIRECRAWL_API_KEY": "■■■"
      }
    }
  }
}

Here’s the cursor MCP output from one of the servers:

2025-03-27 15:48:41.128 [info] king: Handling ReloadClient action
2025-03-27 15:48:41.128 [info] king: getOrCreateClient for stdio server.  process.platform: darwin isElectron: true
2025-03-27 15:48:41.128 [info] king: Starting new stdio process with command: npx -y @modelcontextprotocol/server-sequential-thinking
2025-03-27 15:48:41.128 [error] king: Client error for command A system error occurred (spawn npx ENOENT)
2025-03-27 15:48:41.129 [error] king: Error in MCP: A system error occurred (spawn npx ENOENT)
2025-03-27 15:48:41.129 [error] king: Failed to reload client: A system error occurred (spawn npx ENOENT)
2025-03-27 15:48:41.129 [info] king: Client closed for command
2025-03-27 15:48:41.129 [error] king: Error in MCP: Client closed
2025-03-27 15:48:41.130 [info] king: Handling ListOfferings action
2025-03-27 15:48:41.130 [error] king: No server info found
2025-03-27 15:48:41.131 [info] tlab: Handling ListOfferings action
2025-03-27 15:48:41.131 [error] tlab: No server info found
2025-03-27 15:48:41.132 [info] ools: Handling ListOfferings action
2025-03-27 15:48:41.132 [error] ools: No server info found
2025-03-27 15:48:41.132 [info] ping: Handling ListOfferings action
2025-03-27 15:48:41.132 [error] ping: No server info found

Any idea what broke this in 0.48.x?

2

seems like a simple restart to my computer solved this :smiley:
closed

3

Hey there,

  • Fast solution: Restart your computer.
  • Make sure you add npx as path if you’re on Windows and that you have all the modules installed.
  • Right next to the pencil click that and see the behaviour of any processes that might be opening/closing.
  • Downgrade and test with a different version.
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